ATE352177T1 - WAVE FIELD SYNTHESIS DEVICE AND METHOD FOR DRIVING AN ARRAY OF SPEAKERS - Google Patents

WAVE FIELD SYNTHESIS DEVICE AND METHOD FOR DRIVING AN ARRAY OF SPEAKERS

Info

Publication number
ATE352177T1
ATE352177T1 AT04739448T AT04739448T ATE352177T1 AT E352177 T1 ATE352177 T1 AT E352177T1 AT 04739448 T AT04739448 T AT 04739448T AT 04739448 T AT04739448 T AT 04739448T AT E352177 T1 ATE352177 T1 AT E352177T1
Authority
AT
Austria
Prior art keywords
loudspeakers
virtual source
loudspeaker
array
wave field
Prior art date
Application number
AT04739448T
Other languages
German (de)
Inventor
Thomas Roeder
Thomas Sporer
Sandra Brix
Original Assignee
Fraunhofer Ges Forschung
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fraunhofer Ges Forschung filed Critical Fraunhofer Ges Forschung
Application granted granted Critical
Publication of ATE352177T1 publication Critical patent/ATE352177T1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/002—Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/02—Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
    • H04S2420/13—Application of wave-field synthesis in stereophonic audio systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Mathematical Analysis (AREA)
  • General Physics & Mathematics (AREA)
  • Algebra (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Stereophonic System (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

In a wave field synthesis apparatus for driving an array of loudspeakers with drive signals, the loudspeakers being arranged at different defined positions, a drive signal for a loudspeaker being based on an audio signal associated with a virtual source having a virtual position with reference to the loudspeaker array and on the defined position of the loudspeaker, at first relevant loudspeakers of the loudspeaker array are determined on the basis of the position of the virtual source, a predefined listener position, and the defined positions of the loudspeakers, so that artifacts due to loudspeaker signals moving opposite to a direction from the virtual source to the predefined listener position are reduced. Downstream to means for calculating the drive signal components for the relevant loudspeakers and for a virtual source, there is means for providing the drive signal components for the relevant loudspeakers for the virtual source to the relevant loudspeakers, wherein no drive signals for the virtual source are provided to loudspeakers of the loudspeaker array not belonging to the relevant loudspeakers. With this, artifacts in an area of the audience room due to a generation wave field are suppressed, so that in this area only the useful wave field is heard in artifact-free manner.
AT04739448T 2003-06-24 2004-05-28 WAVE FIELD SYNTHESIS DEVICE AND METHOD FOR DRIVING AN ARRAY OF SPEAKERS ATE352177T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE10328335A DE10328335B4 (en) 2003-06-24 2003-06-24 Wavefield syntactic device and method for driving an array of loud speakers

Publications (1)

Publication Number Publication Date
ATE352177T1 true ATE352177T1 (en) 2007-02-15

Family

ID=33520876

Family Applications (1)

Application Number Title Priority Date Filing Date
AT04739448T ATE352177T1 (en) 2003-06-24 2004-05-28 WAVE FIELD SYNTHESIS DEVICE AND METHOD FOR DRIVING AN ARRAY OF SPEAKERS

Country Status (10)

Country Link
US (1) US7684578B2 (en)
EP (1) EP1637012B1 (en)
JP (1) JP4338733B2 (en)
KR (1) KR100719816B1 (en)
CN (1) CN100536609C (en)
AT (1) ATE352177T1 (en)
AU (1) AU2004250746B2 (en)
CA (1) CA2530626C (en)
DE (2) DE10328335B4 (en)
WO (1) WO2004114725A1 (en)

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Also Published As

Publication number Publication date
KR100719816B1 (en) 2007-05-18
CA2530626C (en) 2013-07-16
DE502004002688D1 (en) 2007-03-08
CA2530626A1 (en) 2004-12-29
CN1826838A (en) 2006-08-30
AU2004250746B2 (en) 2007-02-01
JP4338733B2 (en) 2009-10-07
US7684578B2 (en) 2010-03-23
KR20060019610A (en) 2006-03-03
JP2007507121A (en) 2007-03-22
EP1637012A1 (en) 2006-03-22
CN100536609C (en) 2009-09-02
US20060098830A1 (en) 2006-05-11
DE10328335B4 (en) 2005-07-21
EP1637012B1 (en) 2007-01-17
AU2004250746A1 (en) 2004-12-29
DE10328335A1 (en) 2005-01-20
WO2004114725A1 (en) 2004-12-29

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